Artist: James McNeill Whistler Date: 1878 Collection: Glasgow University Library Accession Number: MS Whistler LB11 p.49 Medium: pen and black ink Support: cream laid paper Size: 4 5/16 x 6 15/16" (110 x 176 mm) Signature: butterfly (on letter) Inscription: '24. May. 1878' by C. A. Howell
MacDonald, Margaret F., James McNeill Whistler. Drawings, Pastels and Watercolours. A Catalogue Raisonné, New Haven and London, 1995 (cat. no. 676) as 'The Owl in the clouds'.